Chapter 22.9, Problem 22.28P

(a)

Interpretation Introduction

Interpretation:

The major product of the given base-catalyzed aldol condensation with dehydration is to be predicted.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated $\alpha ,\beta -$ unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to a formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The major product of the given base-catalyzed aldol condensation with dehydration is to be predicted.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated $\alpha ,\beta -$ unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to a formation of new carbon-carbon double bond.